Airtac MAC Stainless Steel Mini Air Cylinder MAC40X50SCM
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X50SCM is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 50mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service. A variable air cushion at both ends lets you tune end-of-stroke deceleration on site.
- BoreØ40 mm
- Stroke50 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X50SCM
With its CM round-end back cover, the MAC40X50SCM suits frames where the rear of the cylinder needs a clean round face rather than a pivot lug. The body is a rolling-packed stainless barrel with aluminium-alloy covers and a 20 um hard-chrome plated rod, so damp air and washdown mist are handled without the rust a painted mini would show.
At 0.5 MPa the 40 mm bore delivers 628.3 N of push - about 64 kg of straight lift, or a comfortable 32 kg vertical lift once halved for margin - and 527.8 N on the return. Running 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s, the variable cushions at both ends let you speed up heavier moves without hammering the covers.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X50SCM Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X50SCM |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Variable air cushion, both ends |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MA-series datasheet. Barrel: stainless-steel tube (round-body, riveted rolling-packed construction); piston rod: carbon steel with 20µm hard-chrome plating; covers: aluminium alloy. Thread options: PT (blank) / G / NPT. Every MA-series cylinder ships with a built-in magnet for CMSG / DMSG / EMSG position sensors.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MAC Stainless Steel Mini Air Cylinder MAC40X50SCM
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
| CA / U / CM | Back-cover type: CA pivot, U flat-end, CM round-end. |
MA-family variants: MA / MAC (double acting ±cushion), MSA / MTA (single acting push / pull), MAD / MACD (double rod ±cushion), MAJ / MACJ (adjustable stroke ±cushion), MAR (cushioned with integrated F/U mount). Mounting accessories: FA flange, LB foot, SDB pivot; plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X50SCM Is Used
Second-op ejector
Pushing a machined housing out of its jig after the second operation, a hand-off job the 40 mm bore does in one cushioned stroke.
Slider indexing
Indexing a parts slider between two stops on an assembly bench, with a CMSG switch on the built-in magnet confirming each end position.
Knuckle press-fit tool
Pressing a hinge knuckle home in a small forming fixture, where the 628 N push at 0.5 MPa is the working force and the 527.8 N return clears the ram.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X50SCM the Right Cylinder?
If 628 N at 0.5 MPa is more than the job needs, the 32 mm bore gives 402 N in a smaller package; if loads creep up, the 50 mm bore offers 981 N. A centred valve leaves the rod free to creep, so use a rod lock or pilot check valve when a stopped position has to be kept under load. Mount with FA flange, LB foot or SDB pivot brackets, add I or Y rod knuckles for the tooling end, and order G or NPT ports if the plant is not on PT.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check On first run, back off the cushion screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X50SCM FAQ
At 0.5 MPa it pushes 628.3 N and pulls 527.8 N; at 0.7 MPa it reaches 879.6 N push and 738.9 N pull, topping out at a theoretical 128.1 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi) with speeds from 30 to 800 mm/s.
Open both cushion needle screws fully, run the cylinder through a few strokes, then close each screw gradually until the end-of-stroke knock disappears. With cushions set, heavier loads can be run faster within the 30-800 mm/s band without hammering the covers.
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